Figure 7(a) illustrates the temperature distribution of the building using sandwich concrete/gypsum precast wall panel (associated with GV specimen), while Figure 7(b) depicts the temperature distribution of the conventional building with precast concrete wall panel
(associated with C specimen).
The producer focused on load-bearing, insulated precast concrete wall panels
; architect, developer and general contractor communities embraced the potential for durable, quicker to erect, and better insulated structures--especially as metal building system alternatives.
Oldcastle Precast, using their expertise in precast concrete structures, manufactured 136,162 square feet of precast concrete hollow core plank for the floors and roof, which was specifically design to handle the unique load of a roof top greenhouse and 70,000 square feet of precast concrete wall panels
to construct an energy efficient building envelope for the eight-story Forest House Development building.
There are three primary types, each having unique insulating characteristics: composite precast concrete wall panels
, tilt-up concrete wall panels, and non-composite precast concrete wall panels
The Superior Walls system consists of precast concrete wall panels
with steel-reinforced concrete studs, reinforced top and bottom footer beams, pre-attached wood nailers for ease of finishing, 1 inch continuous rigid DOW Styrofoam insulation, precast access holes for wiring and sill plate connection, and 5,000 psi concrete which eliminates the need for additional waterproofing or tarring.
Materials used were 290 cu yd of concrete; 70 cu yd of shotcrete; 35,000 lb of reinforcing steel; 8,500 sq ft of steel diaphragm; 40 mi of prestressing steel; 14 precast concrete wall panels
; and 24 precast concrete dome panels.
Precast concrete wall panels
are formed, given shape, poured, cured, and finished in a continuous production line nearly untouched by human hands.
THE WELL-KNOWN rationale for using precast concrete wall panels
generally includes shortened construction schedules, strong thermal performance and extended life span.